Simple conditional Gateway with object evaluation

Camunda 7 Topics Discussion & Questions
1

I have the following bpmn process. The review Person is called successfully and I can see the personDto object exists when I step debug code in the ReviewPerson java class.

However it does not make it as far as Meat Pizza or Vegetarian Pizza. The logic gate isnt workng.

03
031186×609 39 KB

The classes Im using look like this

    public class PersonDto implements Serializable {
        private static final long serialVersionUID = 9l;
        public String name;
        public Boolean isVegetarian;
        public Boolean isVegetarian(){
            return isVegetarian;
        }
    }

Part of code that calls the method looks like this

PersonDto personDto = new PersonDto();
personDto.setIsVegetarian(true);

Map<String,Object> vars = new HashMap<>();
ObjectValue personVal = Variables.objectValue(personDto)
  .serializationDataFormat(Variables.SerializationDataFormats.JAVA)
  .create();
vars.put("personDto", personVal);

ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("OrderPizza", vars);

log.info("process instanceId:{} processId:{}", processInstance.getProcessInstanceId(), processInstance.getId());
return processInstance;

The error im getting is
org.camunda.bpm.engine.ProcessEngineException: condition expression returns non-Boolean: result has class java.lang.String and not java.lang.Boolean

My thinking is its.
I dont have the condition expression type setup incorrectly? If you look in the screenshot on the properties bit I have set the expression as

personDto.isVegetarian==true

Not sure I have done that part correctly?

Also do I need to set Input/Output part of the ReviewPerson task?

2

try putting the expression inside brackets like this

#{personDto.isVegetarian==true}

3

Works perfect thankyou Niall.

4